Tuna Salad Sandwich with Apple

This recipe for Martha's Favourite Tuna Salad Sandwich makes a healthy meal for lunch or dinner.

12 oz tuna, packed in oil, drained
2 stalks celery, halved lengthwise and thinly sliced
1 apple, such as McIntosh or Gala, peeled, cored and cut into ¼" pieces
3 Tbsp. Hellmann's mayonnaise, preferably Ojai Cook's Lemonaise Light
1-2 Tbsp. red onion, finely grated or minced
2 Tbsp. fresh basil leaves, chopped
1 Tbsp. lemon juice, freshly squeezed
coarse sea salt
black pepper, freshly ground
8 slices sourdough bread

In a medium bowl, combine tuna, celery, apple, mayonnaise, onion, basil, and lemon juice; mix well. Season with salt and pepper.

On a work surface, divide tuna salad among 4 slices bread; top with remaining 4 slices bread. Serve.

Makes 4 servings.